Question: "Who is not same as Alexander III of Russia, whose tomb is Archbasilica of St. John Lateran?"
Paraphrase: "Who isn't same as Alexander III of Russia, whose tomb is Archbasilica of St. John Lateran?"
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q120180 wdt:P1889 ?answer . ?answer wdt:P119 wd:Q84090}